Flush-valve.



No. 79?,353. I PATENTED AUG.. 15, 1905. J'. P, G-OUDPELLOW d: S.. R..RAMSAY..

n FLUSH VALVE.,

LPPLmLTNH FILED .'U'B 20, 1904:.

pivrrnn sierras PATENT burnin..

JUSEPH PETER GOGDFELLOW AND SAMUEL ROBERT RAMSI/lli', @E NEWWEETBHNSTER, CANADA.

lilo. 797,353,

Specification of Letters Patent.

Patented Aug. 15, 1905.

Application filed lune 20, 190i. Serial No. 213,295.

To (all 'Il/tem, it mrty/ con/cern,.-

Be it known that we, JosErn PETER GoonrELLow and SAMUEL ROBERT Ramsar,citizens of the United States of America, and residents of Newlvestminster, in the Province of lBritish Columbia and Dominion ofCanada, have invented a new and Improved Flush-Valve, of which thefollowing is a full, clear, andv exact description.

Uur invention relates to a {lush-valve; and the objects of the inventionare to improve the construction of devices of this character in such amanner as to do away with the annoyances of the ball-cocks, floats, andthe like now in use, to simplify the construction of' such devices, andespecially to provide a valve which will be balanced under allpressures.

Further objects of the invention will appear in the course of thesubjoined description.

Reference is to be had to the accompanying drawings, forming a part ofthis specification., in which similar characters of reference indicatecorresponding parts in both views.

Figure l is a central sectional view of a tank with a preferred form ofour invention apu plied thereto, and Eig. 2 is a sectional view on theline 2 2 of Eig. l.

ln the drawings the tank is represented by a, and it is provided with aconcave bottom a and a closed top. lhe bottom is provided with anopening in which is placed a screwthreaded ringI a for supporting a nut7). The nut is provided with an upwardly-extending case c, which hasopenings c in its sides for the admission of water from the tank. Thenut is also provided with a valve-seat b for a valve (L which isprovided with a leather disk nl' or equivalent thereof for forming awatertight joint with the valve-seat.

rllhe casing c is provided at its upper end with a cylinder c2, and thevalve Z is mounted upon a hollow stem c, which, as will be seen later,constitutes a drip-tube. rlhis tube also supports a piston f, which isprovided with a cup-shapcd leather disk j" for making a water-tightjoint and is also provided with a washer f2 and a nut]LIS for securingthe parts in position on the dup-tube. The valve nl 1s secured inposition by means of a washer d2 and a nut d in the same manner.

The upper part of the cylinder c2 is closed by means of a cap r/ and avalve t, which is adapted to seat lupon and close an opening r/ in thecapa lhe valve is mounted upon a plate it, pivoted to standards 02projecting` upwardly from the cap, and the valve is sccured to thepivoted plate by means of a screw 1.2 or the like. Extending upwardlyfrom the plate /z/ is a rod f, upon the upper end of which is secured ahollow, spherical, or other shaped float t.

The lower part of the drip-tube e is guided in the nut by means ofprojections 62 and is provided with a slot c in its extreme lower end inwhich works a lever ln.j, rlhis lever m is preferably contained within awaste-pipe a and is mounted upon a shaft n, which passes through thewall ofthe waste-pipe and `is provided with a stufling-box o. Upon theouter end of the shaft is a lever p, to which is secured a rope or chainq for operating` the valve.

fr is a stop in the wastc-pipe for preventing' the lever fm, fromturning too far.

s is a feed-pipe for the tank and preferably extends therein through thebottoni a' and is provided with openings t, the combined area of whichmay be greater than the area of the openingl (7, as will be seen later.or the area of the opening g' may be a little greater than that of thepassage in the drip-tube VIt will be seen that on account of the closingof the opening y when the water reaches a high enough level to force thefloat t to its highest position and the admission of water through theopenings c into the interior of the casing c and allowing it to pressupon the lower surface of the piston j' and the upper surface of thevalve nl, which is slightly larger than the former7 a perfoctly-balancedvalve will be secured, and it will be balanced what ever the pressure ofthc water in the tank. llt will thus be seen that the functions of thepiston f arc to exert a lifting force on the valve CZ, to balance itwhen closed, and also to lift it up by means of the pressure of thewater on. its lower surface when the valve rl is suiliciently raised todestroy the balance of pressure by admitting water underneath it.

Although we have described a 'particular embodiment of our inveiistion,it will bo obvious that many modifications may bc made therein and thatthe invention may be elnbodied in many other forms. We do not wish tolimit ourselves tothe exact construction shown and described, but desireprotection for the principle of our invention as set forth in theappended claims.

The operation of the device illustrated in the drawings will now bedescribed. As the water enters the tank through the openings t it willrise to the level of the top of the cap g, the air passing' out throughthe opening g; but upon the entrance of more water than can pass throughthe opening' g the tank will be gradually filled above this point, andthe air entrapped above the water will be compressed until it reaches apressure equal to that of the source of the system. When it reaches ahigh enough level to float the shell Z, the opening r/ will be closed bythe valve /t and no more water will be permitted to iiow into thecylinder c2 and through the drip-tube At this point the parts are all inthe position shown in Fig'. l. If now the lever j) is tripped by meansof a pull on the chain g, the lever m will be raised slightly, carryingwith it the drip-tube e and with it the valve Z and piston f. As soon asthe valve CZ is unseated the balance of pressure between the valve andpiston will be destroyed and there will be no force except the force ofgravity acting upon the valve Z to cause it to move upwardly ordownwardly. Therefore the pressure of water against the bottom of thepiston f will force it up in the cylinder c2, the air in the cylinderescaping through the drip-tube c. It will be seen from this that as soonas the valve is unseated no further force on the chain q will berequired to move the valve to its uppermost position. Then this isaccomplished, the water will rapidly flow in through the pipe s, and assoon as it is lowered sufliciently to allow the shell Z to fall back andswing' the plate /L on its pivot, so as to unseat the valve L, waterwill be permitted to ilow through the opening g into the cylinder c2 andout through the drip-tube. Then the water reaches a level below thebottoni of the piston f, the force holding the valve (Z up away from itsseat will be removed, and consequently the valve will settle back to itsseat by gravity. During all this time water will of course enter thetank through the openings t, which are not affected in any manner bythese various operations. As soon as the valve CZ is seated the tankwill commence to lill up and the cycle of operations described will berepeated.

It will be observed that the opening' g constitutes a passage forrefilling the bowl after flushing. lt will also be seen that all theparts of the device are located in the concave bottom, where they cannotbe readily tampered with and where they will be out of sight and yetwill not be in the water-tank itself. It will also be seen that thevalve is perfectly balanced under any pressure without the aid offloats, weights, or springs; that the whole device is composed of fewparts and that but slight force is required to operate it; that it canbe removed from the tank readily without disturbing the tank or anyother parts, and that it may be used on the tank in any positionwhatever, either high or low; that the device is very economical in theconsumption of water, and that it has many other points of utility.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent4 l. T he combination with a flush-tank havingan outlet, of a valve for said outlet, a cylinder having' an inlet, apiston in the cylinder, a tube rigidly connecting the piston with saidvalve and constituting an outlet for the cylinder through the piston andvalve, a second valve for said inlet, said second valve being movablyconnected to said cylinder, and means for automatically operating saidsecond valve independently of the first-mentioned valve.

2. A valve device comprising a casing having a seat, a valve adapted tocoact with said seat, a cylinder having an inlet and an outletdischarging through the valve, a piston in said cylinder rigidlyconnected with said valve, a valve for said inlet, and means foroperating said last-named valve.

3. A valve device comprising a valve proper, a cylinder having an inletand an outlet above the valve, a second valve for closing and openingsaid inlet, said second valve being pivotally connected to saidcylinder, and means for operating said second valve comprising' a iioatsaid means being independent of the first valve.

Ll. A Valve device comprising a valve proper, a piston rigidly connectedthereto, a cylinder for said piston having an inlet, a valve for theinlet a waste-pipe, andV a drip-tube passing' through said piston andfirst-mentioned valve and constituting an outlet for said cylinder andterminating in said waste-pipe.

5. A valve device comprising a valve-casing having a seat and openingsthrough its walls, a valve adapted to rest on said seat, and having anupper surface for the reception of pressure from liquid in the casing, aperforated piston rigidly connected with the valve, and a cylinder forsaid piston having an open end whereby pressure on the valve is balancedby pressure upon the piston in the cylinder.

6. A valve device comprising a seat, a valve, a drip-tube, passagethrough the valve, means for adjustably securing said valve to saidtube, the said tube-cylinder above the valve, a piston in the cylinderand secured to the driptube, said piston having a lower surface ofsmaller area than the upper surface of the valve, and open to thepressure of liquid in the device having' a slot, a lever engaging saidtube in the slot, and means for operating said lever to unseat thevalve.

'7. A valve device comprising a valve-casing having a seat and openingsthrough its walls, a valve adapted to engage said seat and having anupper surface for the reception of pressure, a perforated piston rigidlyconnected with the valve, a cylinder for said piston having an open endwhereby pressure on the Avalve is balanced by upward pressure upon thepiston in the cylinder, and a hollow tube rigidly connecting said valveand piston and passing through both, the upper end of said tubeterminating within said cylinder and the lower end below said valve.

8. The combination with a flush-tank, of an inlet-pipe therefor havingopenings, a valvecasing having' a valve-seat located on the bottom ofthe tank, and said casing projecting into the tank, a cylinder on saidcasing having' an open lower end opposite said valve-seat, and an inletof smaller area than the combined area of the openings in said pipe, apiston in said cylinder, and avalve in the casing adapted to engage saidseat and rigidly connected with said piston.

9. yihe combination with a il ush-tank having' a closed top, of aninlet-pipe therefor having openings, a valve-casing having a valve-seatlocated on the bottom of the tank and projecting' into the tank, acylinder on said casing having an open lower end and an inlet of smallerarea than the combined area of the openings in said pipe, a perforatedpiston in said cylinder, a perforated valve in the casing adapted toengage said seat, and a drip-tube rigidly secured in the perforations ofthe cylinder and valve and extending through the valve below the bottomof the tank.

l0. The combination with a flush-tank having a closed top, of aninlet-pipe therefor having openings, a valve-casing having' a valveseatlocated on the bottom of the tank and projecting' into the tank, acylinder on said casing' having an open lower end and an inlet ofsmaller area than the combined area of the opening's in said pipe, aperforated piston in said cylinder, a perforated valve in the casing'adapted to engage said seat, a drip -tube rigidly secured in theperforations of the cylinder and valve and extending' through the 'valvebelow the bottom of the tank, a lever pivoted below the tank, and an armconnected with the lever adapted to eng'age the driptube for moving thepiston and valve.

li. The combination with a `flush-tank having a closed top, of aninlet-pipe therefor having openings in the tank, a valve-casing having avalve-seat and projecting into the tank, a cylinder on said casinghaving an open lower end and an inlet 0f smaller area than the combinedarea of the openings in said pipe, a pivoted valve for the inlet in thecylinder, a '[ioat for controlling said valve, a perforated piston insaid cylinder, a perforated valve in the casing adapted to engage saidseat, a driptube secured in the perlorations of the piston and valve andextending through the valve below the bottom of the tank, and awastepipe into which the valve-casing' and cylinder are adapted todischarge the latter through the drip-tube.

12. The combination with a Hush-tank having a closed top and a concavebottom, of an inlet-pipe therefor entering' said bottoni and havingopenings, a valve-casing' having' a valve-seat located at the upper partof the bottom and p rojccting into the tank therefrom, acylinder on saidcasing having an open lower end and an inlet of smaller area than thecombined area of the openings in said pipe, a pivoted Valve for theinlet in the cylinder, a float in the tank for controlling' saidlastmentioned valve, a perforated piston reciprocably mounted in saidcylinder, a perforated valve movably mounted in the casing' and adaptedto engage said seat in the casing', a drip-tube rigidly secured in theperforations 0f the piston and valve and extending through the valvebelow the bottom of the tank, a waste-pipe into which the valve-casingand cylinder are adapted to discharge the latter through the drip-tube,a lever pivoted to the waste-pipe, and an arm connected with the leverand adapted to engage the drip-tube for moving the piston and valve.

.ln testimony whereof we have signed our names to this speciiication inthe presence of two subscribing' witnesses.

JOSEPH lll'llllt (iOOlilllliliO'W. SAMUEL ROBERT lliilllSiiY.`Witncssesz F. lV. HowAY, R. L. Rmb.

